IBM Bluemix is a cloud platform as a service (PaaS) developed by IBM that supports several programming languages and services as well as integrated DevOps tools to build, run, deploy and manage applications on the cloud. It is based on Cloud Foundry open technology and runs on SoftLayer infrastructure, providing developers flexibility and the ability to auto-scale applications. The document discusses Bluemix features and services and provides examples of applications developed by the author on the Bluemix platform.